Abstract: A method for traversing a multiplexed data packet stream including choosing a starting location in a multiplexed data packet stream; making a bi-directional search from the starting location to locate a nearest system stream object; and traversing the system stream as a doubly-linked list of objects. Traversing the system stream preferably includes traversing object links of the doubly-linked list of objects. The objects are further preferably cached with an LRU process. Multiple disjoint locations in the system stream can be accessed with a virtual linked list. The virtual linked list can be used to search forwardly, backwardly, or both forwardly and backwardly.

Abstract: A method for providing an e-mail system including providing a server connected to a network; inputting a message from a sender into the server to be sent as e-mail to at least one recipient mail box on the network; enhancing the e-mail message with a self-executing programmable enhancement; and delivering the e-mail over the network to the at least one recipient mail box. Optionally, the method may provide a number of e-mail boxes on the server assigned to a number of members for the receipt of e-mail addressed to the members at the server, and a menu listing a number of the self-executing programmable enhancements. An e-mail system including a server coupled to a wide area network, and a web site hosted by the server that is capable of at least temporarily storing a message to be sent as e-mail over the wide area network to at least one recipient mail box.

Abstract: A method and apparatus is described for producing a translucent image over a base image created on the display screen of a computer system by a selected first application program, and conducting image operations either on the base image created by the selected application program with reference to the translucent image produced, or conducting image operations on the translucent image with reference to the base image of the first application program. The first application program runs on a central processing unit (CPU) of a computer system to produce a base image, and another application program referred to as the overlay program is run to produce the translucent image such that portions of the base image which are overlapped by the overlay image are at least partially visible through the translucent image. There is also a mechanism for blending the first video data and the second video data to produce a blended image on the screen assembly.

Abstract: A method and apparatus for producing a translucent image over a base image created on the display screen of a computer system by a selected first application program, and conducting image operations either on said base image created by the selected application program with reference to the translucent image produced, or conducting image operations on said translucent image with reference to said base image of the first application program. The first application program runs on a central processing unit (CPU) of a computer system to produce a base image, and another application program referred to as the overlay program is run to produce the translucent image such that portions of the base image which are overlapped by the overlay image are at least partially visible through the translucent image. There is also a mechanism for blending the first video data and the second video data to produce a blended image on the screen assembly.

Abstract: A method and apparatus for blending first and second images stored in respective first and second VRAM buffers for production of a combined image on a computer display screen. The method includes storing a first image to be blended in a first VRAM buffer and storing a second image to be blended in a second VRAM buffer. The blending mechanism includes the process of loading the respective VRAM buffers with component 4 bit contributions of information representing first and second gray levels or color tones pixelwise representative of corresponding pixel portions of the respective first and second images to be combined. The output of the VRAM buffers combines these contributions of the respective first and second images to produce an address to a look-up table which produces at that particular address location a blended gray level or color tone representative of a blending of the two gray levels or color tones.

Abstract: A method and apparatus for providing a translucent overlay image over a base image on the screen of a computer system. The method includes the steps of running an application program on a central processing unit (CPU) of a pen computer system to produce a base image in a screen coupled to the CPU; and running an overlay program on the CPU to produce an overlay image on the screen such that portions of the base image which are overlapped by the overlay image are at least partially visible through the overlay image. The overlay program is a computer implemented process comprising the steps of displaying an overlay image on the screen, intercepting screen inputs which contact the overlay image, processing the intercepted screen inputs in the CPU, and updating the application program based on the processed screen inputs.

Abstract: The present invention provides method and apparatus for inputting data to an active application of a computer system. A method of the present invention comprises the steps of creating an input image on a screen of a computer system, detecting the engagement of the input image by a pointer, analyzing the engagement to determine input data, and sending the input data to the active application program. Another method of the present invention comprises the steps of initializing a computer implemented process for intercepting input request calls made by the active application program, creating an input image on the computer system's screen, detecting an engagement of a pointer with the input image, analyzing the engagement to determine potential input data, and sending the input data to the application program. The present invention preferably includes an organizational image including a palette and a number of icons representing input utilities.

Abstract: A method and apparatus for providing a note on an application program includes noticing a note anchor object associated with a data file displayed by an application program on a computer screen and displaying a note slip image over the displayed data and images of the application program. Many anchor objects and note slips may be displayed on the screen at once, and a single anchor object is preferably associated with a single note slip. The note slip is preferably receptive to pen-based inputs, and may be resized or moved on the screen. The anchor object includes a visual picture data portion and a picture comment data portion that descibes the note slip associated with that anchor object. The anchor object preferably exists as a standard graphical picture in the application program and can be manipulated as such. The present invention thus allows note slips to be displayed in existing application programs, either pen-compatible or non-pen-compatible.

Abstract: A stylus-aware computer system and method are provided for processing information obtained by moving a stylus over a tablet of the type that displays images as well as inputs stylus information. As a user moves the stylus with respect to the tablet, the tablet generates outputs describing the position of the stylus with respect to the tablet. A tablet driver converts this data into standardized packet objects recognized by the computer system and sends the packet objects to a stroke manager. The stroke manager converts the package objects to stroke objects which represent the trajectory of the stylus with respect to the tablet at times between two transitions such as placing the stylus on the tablet and lifting the stylus off the tablet. The stroke manager notifies an application of the stroke object through an event queue. The application may then issue stroke commands which dictate how the stroke is used. The stroke may, for example, be drawn on the tablet, erased from the tablet, removed from memory, etc.